Predicting Missing Markers to Drive Real-Time Centre of Rotation Estimation

  • Authors:
  • Andreas Aristidou;Jonathan Cameron;Joan Lasenby

  • Affiliations:
  • Department of Engineering, University of Cambridge, Cambridge, UK CB2 1PZ;Department of Engineering, University of Cambridge, Cambridge, UK CB2 1PZ;Department of Engineering, University of Cambridge, Cambridge, UK CB2 1PZ

  • Venue:
  • AMDO '08 Proceedings of the 5th international conference on Articulated Motion and Deformable Objects
  • Year:
  • 2008

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Abstract

This paper addresses the problem of real-time location of the joints or centres of rotation (CoR) of human skeletons in the presence of missing data. The data is assumed to be 3dmarker positions from a motion capture system. We present an integrated framework which predicts the occluded marker positions using a Kalman filter in combination with inferred information from neighbouring markers and thereby maintains a continuous data-flow. The CoR positions can be calculated with high accuracy even in cases where markers are occluded for a long period of time.